Lamp



FIG. 1 is a left side elevational view of the lamp embodying our new design, the right side elevational view being a mirror image thereof;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a perspective view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a lamp, as shown and described. 